Automatic control for web replenishing mechanism



Nov. 7, 1933. A. w. WOOD AUTOMATIC CONTR OL FOR WEB REPLENISHING MECHANISM Original'Filed Feb. 3, 1927 Patented Nov. 7, 1933 UNITED STATES AUTOMATIC CONTROL FOR WEE REPLEN- ISHING MECHANISM 'I-Ienry A. Wise Wood, New York, N. Y assignor to Wood Newspaper Machinery Corporation,

New York, N. Y., a corporation of Virginia Application February 3,

1192?, Scriall No. 165,608

Renewed .l'nne 29, 11981 Claims.

This invention relates to an improvement over the electrical controlling arrangement for a pasting mechanism shown and described in my prior application for patent, Serial No. 42,061, filed 5 July 7, 1925 now Patent No. 1,843,469 granted Feb. 2, 1932, on a Web change device.

The principal object of this invention is to provide automatic means for restarting the machine when the expiring web is to be brought into contact with a fresh web roll for pasting. This automatic device is to be used in addition to the starting push button described in my above mentioned application.

This invention can be used with the type of pasting device set forth in the above mentioned application and is intended for such use particularly. But it is to be understood that it is merely one feature thereof which can be used with other forms of web pasting mechanism. Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawing which is a side view of a web change device such as shown in my above mentioned application showing diagrammatically the electrical connections for controlling the operation of the same, according to this invention.

In the web change mechanism shown in my above identified application, the running web roll A, the fresh web roll B, and the third web roll, which is to become the next fresh roll, are mounted on a reel 58 which turns with a central 1 shaft 129. This reel comprises three sets of arms which support the studs 122 of the three'web rolls A, B and C. On the shaft 120 is a gear 123 operated by a worm 124 on a shaft 125 driven by the motor 30 for the purpose of rotating the reel 58.

On each of the web roll studs 122 at one end is an arm 148 having a roller 141. This roller engages a switch 27 and closes it when the roll rotates around to the position for pasting, when the reel has moved to the position shown. At the same time the surface at the edge of the web roll B itself engages the arm of a yielding switch 28 to close that. The switches 27 and 28 are spring contacts opening automatically when not under pressure.

The feeding belts 53 are driven from a shaft which drives a shaft 85 while the press is running. The shaft 85, through bevel gears 86 and 86 and clutch section 42 drives a cam shaft 81 when clutch sections 42 and 44 are engaged, said shaft 85 performing certain functions in my above identified application which do not constitute 55 part of the present invention.

On this shaft 81 is a clutch 42-44. The section 42 of the clutch turns freely on the shaft and is attached to the gear, 86 which turns the section 42 constantly through gear 86 during the rotation of shaft 85. The magnetic field 44 of the clutch is keyed to the cam shaft. When current from any suitable source is carried through the mag netic field of this clutch, the two clutch parts 42 and 44 will be engaged and the cam shaft 81 will rotate part way around, On account of the electrical means illustrated, the circuit for the magnetic clutch and other electrical features can be supplied by a generator 45 or any other source of power. From the source of power a line marked 46 passes to two brushes 4'1 and 48. One is mounted to engage constantly a metallic collector ring 49 and the other a metallic ring 20. These rings are mounted on the shaft 81 but insulated from each other. It will be seen, therefore, that when this circuit is closed by the engaging of two contacts 21 the circuit will be completed to these two rings, and supply current through a pair of wires 22 to the magnetic elements in the clutch and cause the shaft 81 to rotate from the driving gear 86. The collector ring 49 has a projecting insulated element 23 which, after the cam shaft is rotated a slight distance, will disconnect the collecting ring from a brush 24 connected with a wire 25. When the projection 23 passes by and thus the spring-pressed brush 24 is allowed to engage the metallic surface of the collector ring 49 that establishes a circuit through this wire 25 and the collecting ring, from the dynamo or the like 45, to a circuit breaker 26 through a switch 27 which we will suppose to be closed at the present time, and a switch 28 back to the dynamo. When these switches are both closed, the circuit breaker 26 will act on a lever 29 to close the main circuit 46 at 21, and thereby operate the shaft 81 by power. The lever 29 also closes contacts 40 to short circuit both switches 27 and 28. When the cam shaft 81 has completed a certain angle of rotation the brush 24 r ides upon the surface 23 which is insulated from the rest of the collector ring, thereby releasing the lever 29 and breaking the main circuit 46 at the point 21. This stops the cam shaft.

I have shown all the electrical connections. It will be noticed that there is a driving motor 30 connected with the dynamo 45- and the line 46 by a circuit represented by a dot-and-dash line which is broken at two points by hand switch 31 and magnetically operated switch 32. The hand switch 31 preferably is a push-button which springs open as soon as released. A circuit lil breaker 33 operates the latter at certain times upon the closing of the switch 28. When this switch closes, the circuit breaker is energized and the circuit to the motor is interrupted automatically. The hand switch 31 is in parallel with a switch 31A, mounted on the belt tension arm 63, so that the mechanism may be set into motion either by hand switch 31 or by the approach of the arm carrying the feeding belts within a certain distance of the adjustable projection 31B, mounted on each of the three reel arms, at which time contact is made between the two contacting points of switch 31A which produces precisely the same result as the operation of hand switch 31.

I have also shown a dotted line circuit con nected with a brush 50 engaging a region on the collector which region is interrupted by in sulating sections. 34 separated from each other so that once during each rotation of the cam shaft 81 the circuit from the line 46 is connected through the space between these insulating sections and the dotted line circuit to a solenoid 35 and back. to the line a6. This operates the cutter 57 through a lever or bell-crank 36, pivoted on a center on a frame. One arm of this bell-crank is connected by cable 3'? with the cutter.

Operation Starting with the parts in the position shown,

it will, of course, be understood that the usual. fresh roll propelling tapes (not shown) and the web W feeding belts 53 are being operated con tinuously, although the former are lifted up out of the way and perform no function. The web, or course, is running from the running roll A into the press, and the reel is not rotating nor the roll 13. The cam shaft 81 also is not rotating, the clutch sections 42 and it not being in engagement.

When the running roll A gets quite small, the operator first pastes the spots on the roll B. The operator also closes the hand switch 31. As the switch 32 is closed by a spring, the motor 30 will be started and the reel will commence to rotate to carry the three rolls around slowly. When the new web roll B comes up to-the position shown, its surface engages the switch lever 28 and closes that switch which completes a circuit through the circuit breaker 33, as previously described. This throws out the switch 32 and stops the motor.

The roll B, which has been started by the propelling tapes, is rotating on its ovsn axis. When the arm l lo on its stud has rotated around to the position shown, at which time the paste spot is practically in pasting position, the switch 27 will be closed by the roller 141. Now a circuit is completed through this switch and through the circuit breaker 26 which forms a contact at 21 and completes the circuit 46 so as to start the cam shaft 81 by power, the two clutch sections 42 and 44 now being in engagement. The contacts are also closed at that same time and the two switches 2'7 and 28 thus cut out or short-circuited so that the further rotation of the arm 140 will not affect these conditions. The space between the insulating sections 34 on the collector 4&9 permits the brush 50 to contact with the metallic surface of the collector and the current to flow from the generator 45 through the brush 48, collector ring 49, and dotted line circuit to energize the solenoid 35. This operates the puncturing blade so that it will start a cut in the edge of, the paper. A brake is applied as usual to cause the break to extend across the web, but this is not a part of this invention.

neaaeae The continued rotation of the cam shaft 31 causes the circuit to be broken by the insulated section 23 on the collector ring is and the circuit cannot be i e-established through 25 until the cam shaft is turned by hand and the insulation 23 moved away from the brush 2% so the circuit breaker 26 can be energized. The breaking of the circuit at 23 also deenergizes the circuit breaker 33 and allows the switch 32 to be closed by the action of its spring. When the running roll A gets small enough, the arm 63 carrying the tension belt moves in on the surface of the roll A so that the projection 31B closes the switch are. thus starting the reel to rotate again to bring up a fresh roll C nearly to pasting position.

it will be seen, therefore, that the whole machine is operated at web speed when the splicing is being done, and is started merely by the closing of the hand switch 31 or by the closing of the switch 311i, which starts the motor 30 automati cally and the turning of the cam shaft by hand. The whole operation is performed while the web is moving at web speed and the operator does not have to perform any function at all except to turn the shaft 81, in order to stop the machine, stop the reel, or to bring any or all of the parts to their normal running position ready for the next splic ing operation. The action is not only automatic, but quick and accurate, and on account of the construction and operation of the parts they cannot be operated at the wrong time by any ordi nary tampering with the machine.

in view of the number of operations the ma chine performs it is a comparatively simple machine in construction and operation.

Although I have illustrated and described only a single form of the invention, and explained it as used only with the pastor shown in my prior application, I am aware of the fact that modifications can be made therein, and that it can be applied to other forms of pasters, by any person skilled in the art without departing from the scope of the invention as expressed in the claims.

Therefore, I do not wish to be limited to all the details of construction herein shown and described, but what I do claim is:

In a web replenishing device for a printing press, the combination with a reel carrying a plurality of web rolls, a motor for running the reel to change the positions of the rolls, an electric circuit for supplying the motor with power, a hand switch for completing said circuit, a mechanically operated switch in parallel with the hand switch, and an adjustable stop mounted on the reel near each roll in position to engage the mechanical switch and close it when the running roll is nearly exhausted.

2. In a web change device, the combination with a reel for supporting the web rolls, a motor for rotating the reel having a circuit provided with means for opening it and stopping the reel, means whereby the motor will be started automatically when the running roll is reduced nearly to its minimum diameter and means adapted to be engaged by a web roll moving with the reel for operating the circuit opening means.

3. In a web change device, the combination with a reel for supporting the web rolls, a motor for rotating the reel, a switch adapted to be engaged by the surface of a new web roll when it moves up to splicing position, an electric circuit connected with the switch and with the motor, means whereby the closing of said switch will open the motor circuit and stop the reel, and rneans whereby the motor will be automatically started for rotating the reel when the web roll is nearly exhausted,

a. In a web replenishing clevice for a printing press, the combination with a reel carrying a plurality of web rolls, a motor for ZLLQI the reel to change the positions oi the rolls, an elec trio circuit for supplying the motor with power, a hand switch in said circuit, a mechanically op eratecl switch in parallel with the hand switch, and an adjustable stop mounted on the reel near each roll in position to engage the mechanical switch and close it when the running roll is near- 13; exhausted,

5. in a web replenishing device for a printing press, the combination with a reel carrying a pinrality of web rolls, a motor for running the reel to change the positions of the rolls, an electric circuit for supplying the motor with power, a hand switch for completing saiol circuit, a switch in said circuit for each roll, and an adjustable stop mounted on the reel near each roll position to close said switch to supply power to the motor to start reel when the running roli nearly exhausteri.

6. in a weh replenishing device for a printing press, combination with a reel carrying a pin ralit r o1" weio rolls, a motor tor running the reel to change the positions oi the rolls, a movable tension belt supporting arm, an electric circuit for supplying the motor with power, a mechanically operated switch in said circuit and on said arm, and means on the reel for automatically closing the mechanical switch by the motion of said arm when the running roll is nearly exhausted, where by the motor will Toe started and the reel will he moved to bring the fresh roll towaroi po== sition.

Emmet? WGUD. 

